UCC21521 Description
The UCC21521 is an isolated dual-channel gate driver with 4-A source and 6-A sink peak current. It is designed to drive power MOSFETs, IGBTs, and SiC MOSFETs up to 5-MHz with best-in-class propagation delay and pulse-width distortion. The input side is isolated from the two output drivers by a 5.7-kVRMS reinforced isolation barrier, with a minimum of 100-V/ns mon-mode transient immunity (CMTI).
UCC21521 Key Features
- Universal: dual low-side, dual high-side or halfbridge driver
- Operating temperature range -40 to +125°C
- Switching parameters
- 19-ns typical propagation delay
- 10-ns minimum pulse width
- 5-ns maximum delay matching
- 6-ns maximum pulse-width distortion
- mon-mode transient immunity (CMTI) greater than 100 V/ns
- Surge immunity up to 12.8 kV
- Isolation barrier life >40 years
UCC21521 Applications
- Isolated converters in offline AC-to-DC power supplies